hi all,
i can't get my
engine (Yanmar 4JH3-HTE) to start
so i went to my
boat today with the new
fuel filters, bled the system all the way to the injectors and i noticed the
fuel coming out of the injectors looks weird.
so i checked the fuel in the tank and there is a serious problem in there (see pic). the bottle on the left is what i took out of the
water separator (1st stage) filter. the second stage
fuel filter looks pretty much the same. the bottle on the right is fuel directly sucked from the tank. as you can see there is a MAJOR sediment problem and it's weirdly cloudy and off color. why it's so much worse in the filter than in the tank i can't explain, i guess it's just the place in the tank where the fuel intake sucks from is worse than where i took my sample from.
anyhow, clearly the tank needs emptying, the entire fuel system
flushing and refilling. i can do that but my friend thinks it's dangerous to crank the
engine over until the
fuel pump is rebuilt, otherwise the crap that's in there now could make things worse.
what do you all think and how could the fuel get so bad? the boats in
Thailand so hot and humid all the time.
thx steve